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<blockquote data-quote="Hans Blaster" data-source="post: 77631904" data-attributes="member: 396028"><p>Individual molecules colliding with other individual molecules are *definitely* random.</p><p></p><p>If we mix in a 2:1 ratio hydrogen and oxygen gas (H2 & O2) they don't instantly become water (H2O), nor directly. Different outcomes might occur based on the temperature and pressure of the mixture. All sorts of intermediate molecules *will* form (like OH) individual atoms will fly free from reactions, etc.</p><p></p><p>When an H2 and O2 molecule collide they will first form some sort of intermediate composite state like H2O2 (hydrogen peroxide) usually in an excited state. That intermediate state might relax to create regular hydrogen peroxide, or an oxygen atom might come off and leave behind water. </p><p></p><p>H2 + O2 --> H2O2* --> H2O + O</p><p></p><p>or it might restore the original set of molecules ( --> O2 + H2) or even rearrange into two OH molecules ( --> OH + OH ) depending on the shape of the potential energy surface, the details of the molecular quantum mechanics, the energy of the original collision, the orientation of the original collision, and random chance.</p><p></p><p>(And that's for a simple network with only two types of atoms with limited bonds to make.)</p><p></p><p>All sorts of reactions (probably most of the possible reactions) will occur in any "simple" chemistry. It is not some sort of assembly line operating on instructions like a logic gate.</p></blockquote><p></p>
[QUOTE="Hans Blaster, post: 77631904, member: 396028"] Individual molecules colliding with other individual molecules are *definitely* random. If we mix in a 2:1 ratio hydrogen and oxygen gas (H2 & O2) they don't instantly become water (H2O), nor directly. Different outcomes might occur based on the temperature and pressure of the mixture. All sorts of intermediate molecules *will* form (like OH) individual atoms will fly free from reactions, etc. When an H2 and O2 molecule collide they will first form some sort of intermediate composite state like H2O2 (hydrogen peroxide) usually in an excited state. That intermediate state might relax to create regular hydrogen peroxide, or an oxygen atom might come off and leave behind water. H2 + O2 --> H2O2* --> H2O + O or it might restore the original set of molecules ( --> O2 + H2) or even rearrange into two OH molecules ( --> OH + OH ) depending on the shape of the potential energy surface, the details of the molecular quantum mechanics, the energy of the original collision, the orientation of the original collision, and random chance. (And that's for a simple network with only two types of atoms with limited bonds to make.) All sorts of reactions (probably most of the possible reactions) will occur in any "simple" chemistry. It is not some sort of assembly line operating on instructions like a logic gate. [/QUOTE]
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